How to calculate the diameter of a cylender if height is 10 cm and surface area is 440 cm
Answers
Answered by
0
2πR(H+R)=440
R(H+R)=(440x7x2)/22
R(H+R)=280
10R+R^2=280
quadratic equation
R^2+10R-280=0
solve
R=something (choose the +ve value)
Then! diameter is 2xR
R(H+R)=(440x7x2)/22
R(H+R)=280
10R+R^2=280
quadratic equation
R^2+10R-280=0
solve
R=something (choose the +ve value)
Then! diameter is 2xR
Similar questions